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    SubjectRe: [PATCH] Add MOUNT_STATUS ioctl to cdrom device
    On Tue, Aug 26, 2003 at 01:50:43PM +0700, Samphan Raruenrom wrote:
    > I'm sorry for issueing this layering violation. I read a guideline that
    > it's easier to submit a patch to add device driver ioctl than inventing
    > something new. It really doesn't belong here.

    That guideline is wrong. Adding a driver ioctl is slmost always wrong.

    > Could you guide me where else can I place this functionality?
    > (my random idea)
    > - fcntl(open("/dev/cdrom", F_MNTSTAT)
    > - umount2("/dev/cdrom", MS_TEST) // not actually perform
    > - new system call! e.g. mntstat(open("/dev/cdrom"))

    In userspace. Or you could tell me what you want to actually
    archive - your call by itself doesn't make any sense.

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